Computational Fluid Dynamics and Building Energy Performance Simulation

Peter V. Nielsen, Tryggvi Tryggvason

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An interconnection between a building energy performance simulation program and a Computational Fluid Dynamics program (CFD) for room air distribution will be introduced for improvement of the predictions of both the energy consumption and the indoor environment. The building energy performance simulation program requires a detailed description of the energy flow in the air movement which can be obtained by a CFD program. The paper describes an energy consumption calculation in a large building, where the building energy simulation program is modified by CFD predictions of the flow between three zones connected by open areas with pressure and buoyancy driven air flow. The two programs are interconnected in an iterative procedure. The paper shows also an evaluation of the air quality in the main area of the buildings based on CFD predictions. It is shown that an interconnection between a CFD program and a building energy performance simulation program will improve both the energy consumption data and the prediction of thermal comfort and air quality in a selected area of the building.
Original languageEnglish
Place of PublicationAalborg
PublisherDept. of Building Technology and Structural Engineering
Number of pages7
Publication statusPublished - 1998
SeriesIndoor Environmental Engineering

Bibliographical note

Proceedings of ROOMVEENT '98, Sixth International Conference on Air Distribution in Rooms, Stockholm, Sweden 1998, Vol. 1 pp. 101-107

PDF for print: 14 pp.


  • Air flow pattern
  • Air quality
  • CFD
  • Energy
  • Ventilation efficiency
  • Building energy performance simulation

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